Nice work! I'm curious: the Marantz CD63SE is really such a good player? It is worth to have &modding?btw, how is the sound on the stock form 63SE? I have the newer CD5001 and the sound is amazing but after some mods(opamps, caps, iec)..but now I'm tempted to buy the CD63SE , it is worth?any comparasion between this player and others with the classical TDA1541 audio dac, please?

thank's for replay! Hm, you're right, so sory for disturb, but any comparasion with the classicals player with TDA1541 audio dac? I know how the CD63SE is one of the first Marantz player what use a diferent dac, an NPC dac.

Adding copper foil to the cables and caps will not help at all. Any screening will need to be earthed to make any difference and you will only partially negate the negative effect you have created with those long leads. It's is better to fix or reduce the root cause rather than create another problem then try not fix it!

You can move the caps much closer to the original positions but it will take a little creative thinking!!! I have previously glued caps to the back plate using hot glue. This means you can get the lead length done to a few cm's and more importantly well away from the signal path area!!!! Also you can fit a large cap pre the 5v reg by working out e space then drilling another hole so it can be mounted on the PCB itself!!!!!!!
This is one I modified and sold on eBay last year. You can do quite a lot without making it look messy ;-)

With respect to decoder, I presume you made changes to the clocking. This can be problematic. Look at Brent's list to chow how he completed the clocking direct to the decoder to help understand. This is one mod, I have never completed.

thank's for replay! Hm, you're right, so sory for disturb, but any comparasion with the classicals player with TDA1541 audio dac? I know how the CD63SE is one of the first Marantz player what use a diferent dac, an NPC dac.

I've done extensive work with both players. I love the TDA and still have several players and DAC's that use it. With the TDA you need to tune up to get the detail and dynamics from it. It has a much warmer character but lacks ultimate clarity until you start to upgrade psu's and play with clocking, bit decoupling, I/v and output stage. With the 63, you have a much more detail but harsher sound. The mods here reign it back in and take the hard cold sound towards the more warm and analogue character but retain that ultimate detail. You are working towards the same nirvana but from two opposite directions. Both can be absolutely superb.

THANKS UV100! Very useful your replay, I agree that the TDA need much more work for the same...nirvana :-). and corse much easy to work with the newer technology like CD63SE, even my CD5001 from Marantz to. Yes, the same harshes sound when I bought this 5001, and now after mods is really shining!
cd63SE most be more appreciate.

@UV101 : Thanks for the suggestion. I don't think I can place the big caps in a way as you have suggested. The caps are 30mm dia X 45mm long which are far to big to be placed near to the Tx. I will leave them as they are and see what interference they may have caused to the overall performance before I figure out a better solution.

Regarding the clocking of the DAC the modified circuitry in KI did not work for me and I am thinking of feeding 19.6Mhz signal directly from the independent clock directly to the DAC using a 10pF decoupling cap. Of course I will removed the 100ohm resistor connected to the DAC in its original circuit. I hope this is what Brent has meant.

From your two photos I noticed that you got a small external clock. Did you make it yourself or it is available in the market. It seems that you can use this clock to feed both 19.6 and 8.3 MHz signal to the decoder and servo at the same time.

@UV101: Having looked carefully to your photo I found that your small clock only feeds external signal to the decoder and the long black wire should be an earthing wire for the clcok. I can still see the X'tal and resistor on the servo circuit.

Nice work! I'm curious: the Marantz CD63SE is really such a good player? It is worth to have &modding?btw, how is the sound on the stock form 63SE? I have the newer CD5001 and the sound is amazing but after some mods(opamps, caps, iec)..but now I'm tempted to buy the CD63SE , it is worth?any comparasion between this player and others with the classical TDA1541 audio dac, please?

I can only say when the CD63 has completed its modding you will not believe that the jump in performance is so big.
As a matter of fact I have listened to a heavily modded CD63 made by a friend of mine and TBH the SQ is comparable to his Leema Antila II costing £3000. IMO the CD63 is even more ear friendly because it is so soft/warm and non digital. The vocal is second to none.
I believe all the CDPs can be modded BUT there is no machine that is so easy to strip down and you can easily find a copy of service manual indicating all the details of the entire circuitry including the PCB layout. Unlike modern CDPs where the space are so clamped that makes modifications almost impossible.
If you have doubt to what I had said just buy a 2nd hand CD63 and try some modding yourself.

Thanks a lot for help my friends! Finally, just by curiosity, I just ordered one CD63SE , so I come back with my opinions about this great machine after the first audition . Anyway, must be easy to make the mods, I agree this is more identical with my CD5001 like the old '80s players.